Features-☆ It automatically blocks spam messages. Install and enjoy spam-free Inbox☆ Block SMS on the basis of number, sender phrase, content word or even by Series☆ Block SMS from non-contacts or unknown numbers☆ Separate tabs to organize SMS from contacts & organization☆ See blocked SMS in a separate folder with option to restore to Inbox☆ Intelligently grouping of SMS☆ Fully compatible for MMS☆ Nice dark theme☆ Works on dual SIM☆ No limit on number of Block/Allow list☆ Most superior performance

Download Now! It will take less than a minute to download and set up this app and you will get rid of irritating spam SMS.

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Important Note: From android version 4.4 onward, only one app can handle messages and it needs to be set as default messaging app. So if you are on android 4.4 or higher versions, you need to set Clean Inbox as default messaging app to block AND send SMS. Note that this is a limitation from android for all such SMS apps.

For android versions lower than 4.4, you can use Clean Inbox independently only for blocking.

Official Android blog on this policy change- http://android-developers.blogspot.in/2013/10/getting-your-sms-apps-ready-for-kitkat.html